Winding vacuum energies in a deformed O(4) sigma model

Date

2014

Authors

Bazhanov, Vladimir
Kotousov, Gleb
Lukyanov, Sergei L

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

We consider the problem of calculating the Casimir energies in the winding sectors of Fateev's SS-model, which is an integrable two-parameter deformation of the O(4) non-linear sigma model in two dimensions. This problem lies beyond the scope of all traditional methods of integrable quantum field theory including the thermodynamic Bethe ansatz and non-linear integral equations. Here we propose a solution based on a remarkable correspondence between classical and quantum integrable systems and express the winding energies in terms of certain solutions of the classical sinh-Gordon equation.

Description

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Citation

Source

Nuclear Physics B

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1016/j.nuclphysb.2014.11.005

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